Machine Wet End TRIZ Cases

Triangular tube bank reduces cross-machine nonuniformities by aligning flow with rectangular nozzle geometry.

A slideably coupled pulse generator adjusts the nip volume to reduce fiber flocculation across varying paper grades and processing speeds.

Grouped longitudinal threads in a woven fabric inhibit visible hydraulic markings while maintaining planarity and dimensional stability.

Variable permeability zones in the fabric control fiber accumulation to produce complex watermarks, avoiding mask wear issues.

Pivoting impingement shoe optimizes drainage length to resolve sheet formation quality issues caused by varying stock consistency.

Segmented longitudinal thread layers balance high fiber support with rapid dewatering, reducing paper web moisture content.

Inverting spiral void width to exceed height reduces air permeability and weight while increasing heat transfer during paper drying.

Axially spaced sensors on a sensing roll generate periodic signals to identify tracking segments, resolving nip pressure variability in papermaking.

Segmented drainage shoes with varying wrap angles resolve the trade-off between sheet formation quality and fines retention in twin fabric papermaking machines.

Lower surface side wefts form long crimps over multiple warps, dispersing wear while maintaining water drainage in papermaking wires.

Opposing diagonal twill vectors balance directional forces, easing paper machine guidance while preserving sheet building capability.

Circular holes in the wearing construction extend vacuum suction to remove water, preventing plugging and reducing fabric wear compared to narrow slits.

Distinct edge yarns in a fabric belt absorb moisture while resisting thermal damage from heating plates.

A long fine mesh wire supports a fibrous web continuously from formation to the drying section.

Optimizing drainage channel wall roughness to 2.0 μm reduces water flow resistance and prevents paper residue attachment on the wet web.

Undercut grooves and retaining strips clamp ceramic plates, eliminating plastic compounds that cause positional shifts from thermal expansion.

Elastic flaps with zipper tracks align interdigitated seam loops, reducing labor-intensive alignment time during twin-wire machine setup.

Engineered macro-voids in the press fabric impart surface texture to paper while maintaining dewatering efficiency and preventing rewetting.

A pivoting measuring block uses a bogie structure to support sensor devices and reduce wobble in fibre web tension measurement.

A structured forming fabric uses asymmetric warp and weft yarn knuckles to define deep three-dimensional pockets on the web facing side.

A vacuum draw system uses a moveable patterned gate to apply oscillating pull forces for fiber redistribution.

A continuous band replaces multiple rollers to simplify assembly and reduce maintenance costs in paper machine fabric changing systems.

A fourdrinier wet part forming section uses a couch roll with attached fabric mesh to transfer a wet fiber web toward a pressing zone.